Issa, the chairman of the House Oversight and Government Reform Committee, issued the subpoena to Katherine Archuleta, OPM's director.

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His committee is investigating clearance procedures for government employees in the wake of the September Navy Yard shooting, and the leak of classified documents by former National Security Agency contractor Edward Snowden.

“As the clearinghouse for the federal security clearance process, the Office of Personnel Management has a responsibility to present a complete picture of all subjects who are being adjudicated for a security clearance,” Issa said in a statement Friday.

“In regards to the Washington Navy Yard shooter, OPM failed to provide adequate documentation to the Navy, including an arrest record — easily obtained by Committee investigators — that showed he discharged a weapon in public and behaved erratically.”

Issa said he has written four letters to the OPM four requesting information about the government’s security process.

He has subpoenaed documents, including contracts between the OPM and companies that conduct background checks for it: USIS, CACI International and Keypoint Government Solutions.

USIS, in particular, vetted both the Navy Yard shooter Aaron Alexis and Snowden.

“OPM’s unwillingness to supply relevant documentation to the Committee hinders our ability to address problems, and raises questions about its commitment to do the same,” said Issa.